Homoeocera papalo is a moth of the subfamily Arctiinae. It is known only from a very restricted area in Oaxaca state in Mexico, at high altitude. The length of the forewings is 20–21 mm. The biology of this species is unknown. Etymology The name is a reference to the type locality, Concepción Pápalo, a small city in north east Oaxaca state. The name Papalo means butterfly. References Euchromiina Endemic Lepidoptera of Mexico Fauna of the Sierra Madre de Oaxaca Moths described in 2010